12461987690 has 16 divisors (see below), whose sum is σ = 22701839328. Its totient is φ = 4924736976.

The previous prime is 12461987689. The next prime is 12461987711. The reversal of 12461987690 is 9678916421.

It is a super-2 number, since 2×12461987690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7506392 + ... + 7508051.

It is an arithmetic number, because the mean of its divisors is an integer number (1418864958).

Almost surely, 2^12461987690 is an apocalyptic number.

12461987690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12461987690 is a deficient number, since it is larger than the sum of its proper divisors (10239851638).

12461987690 is a wasteful number, since it uses less digits than its factorization.

12461987690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15014533.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 12461987690 in words is "twelve billion, four hundred sixty-one million, nine hundred eighty-seven thousand, six hundred ninety".